CVE-2025-29823: Microsoft 365 Apps

High severity, CVSS 7.8. EPSS: 0.7% chance of exploitation in the next 30 days.

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Affected products

• Microsoft 365 Apps: affected versions not specified

Published 2025-04-08. Last modified 2026-06-17.